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220-801 Networking

QuestionAnswer
Port Number: FTP 21 Control 20 Data Transfer (standard / passive mode)
Port Number: SSH 22
Port Number: SSH Port Forwarding 22
Port Number: Telnet 23
Port Number: SMTP 25
Port Number: DNS 53
Port Number: TFTP 69
Port Number: RDP 3389
Port Number: HTTP 80
Port Number: POP 110
Port Number: IMAP 143
Port Number: HTTPS 443
Port Number: SSL 443
Port Number: SMTPS 465
Port Number: IMAPS 993
Port Number: POP3S 995
Class A first octet range 1 to 126
Class B first octet range 128 to 191
Class C first octet range 192 to 223
Private IP address ranges 10.0.0.0 - 10.255.255.255 172.16.0.1 - 172.31.255.255 192.168.0.0 - 192.168.255.255
Port Number: SFTP 22 by default (default port for SSH)
Well known port range 0 to 1023
Registered port range 1024 to 49,151
Dynamic port range 49,152 to 65,535
Maximum Transmission Speed: CAT3 10 Mbps
Maximum Transmission Speed: CAT5 100 Mbps
Maximum Transmission Speed: CAT5e 1000 Mbps
Maximum Transmission Speed: CAT6 10 Gbps
This type of ISDN uses two 64-Kbps channels providing a maximum speed of 128 Kbps. Mainly used by homes and small businesses. It also has a 16-Kbps signal control channel. BRI (Basic Rate Interface)
This type of ISDN connection uses 23 64-kbps data channels and one 64-kbps control channel. PRI (Primary Rate Interface) In the US, this is a T1 and provides approx. 1.5 Mbps.
Range of Bluetooth Class 1 100 meters (328 feet)
Range of Bluetooth Class 2 10 meters (33 feet)
Range of Bluetooth Class 3 5 meters (16 feet)
SC Fiber optic cable connector. Short for square connector
LC Fiber optip cable connector. SHort for Lucent Connector. It's a miniaturized SC connector and is popular in new installations.
ST Straight tip fiber optic connector. Connector is round.
Originally used with cable TV connections and efficient when transmitting analog signals. It was used in some early networks but can transmit only a limited amount of data. Uses BNC connectorrs. RG-59
Has a larger center conductor and additional shielding. Has become the standard used with cable/satellite TV because it is more efficient when transmitting digital signals. Networks still on coaxial cable today would use this. F-type screw on connector. RG-6
Cable Type Identifier: 2, 5, C Indicates coaxial cable. Example: 10Base2
Cable Type Identifier: T Inidcates twisted pair cable
Network Topology: Multiple devices connected to a central device (switch, hub). Star
Network Topology: Multiple devices connected to each other in a logical line. Ends must be terminated to prevent signals from bouncing endlessly. If one device becomes disconnected to there is a break in the line, all devices will lose connectivity. Bus
Network Topology: All devices logically configured in a single circle or ring. Data travels around the rung to different devices. Ring
A type of token ring topology that uses fiber optic cable and two rings. The second ring provides a redundant path that can be used if the first path fails. Fiber Distributed Data Interface (FDDI)
Many ring networks added this device. Computers were still in a logical ring, however if a computer failed, this device sensed the failure did not allow the ring to be passed to the failed device. Multistation Access Unit (MAU)
Network Topology: Each device has a direct connections with all other computers in the network. Very redundant and rare due to high expense to implement. Mesh
Network Topology:A combination of any two or more topologies. Hybrid
Protocol used within a network to encrypt traffic. This protocol uses port 22. Secure Shell (SSH)
Protocol commonly used to encrypt web traffic. Uses port 443 by default, but may use other ports depending on the protocol being encrypted. Secure Sockets Layer (SSL)
Designated replacement for SSL. Can be used anywhere SSL is used. Transport Layer Security (TLS)
This protocol is used to send e-mail from a user's computer to the mail server. SMTP (Simple Mail Transfer Protocol) - Think of 'SM' for send mail.
This protocol is used to receive e-mail from a mail server. When this protocol is used, e-mail is generally deleted from the server as it is downloaded. POP3 (Post Office Protocol) - Think of messages popping off the e-mail server.
This protocol is used to receive e-mail from a mail server. Server retains messages as they are downloaded. Additional capabilities include organazing e-mail into folders and search. IMAP (Internet Message Access Protocol)
Protocol used to transfer files over the network, primarily Windows networks. Uses NetBIOS over TCP with ports 137, 138 & 139 by default. If used directly over TCP port 445. Server Message Block (SMB)
Multicast address range 224.0.0.1 - 255.255.255.254
Used to identify the network ID with an IPv6 Address Prefix (ex. /48)
IPv6 Loopback address String of zeros, with a one at the end. Expressed as ::1
Wireless Protocols: Max Speed, Frequency and Range for 802.11a 54 Mbps, 5.0 GHz, lowest range of all wireless standards (30m / 100ft)
Wireless Protocols: Max Speed, Frequency, and Range for 802.11b 11 Mbps, 2.4 GHz, medium range (35m / 115ft)
Wireless Protocols: Max Speed, Frequency, and Range for 802.11g 54 Mbps, 2.4 GHz, medium range (38m / 125ft)
Wireless Protocols: Max Speed, Frequency and Range for 802.11n 600 Mbps (300 Mbps common) 2.4 Ghz or 5.0 GHz, highest range (70m / 230ft)
Type of encryption used with WPA. Designed to make WPA more secure than WEP while using existing hardware (may require firmware update) Temporal Key Integrity Protocol (TKIP)
Type of encryption used with WPA2. Provides stronger security than WEP or WPA. This standard is also used in other IT applications for data encryption. Advanced Encryption Standard (AES)
Command Line Tool: Shows network statistics, including a list of inbound and outbound connections for a system. Netstat
Command Line Tool: Shows statistics for NetBIOS. Nbtstat
Command Line Tool: Used to map drives to remote shares. Net Use
Created by: douros05